1 /* 2 * Check decoding of getcpu syscall. 3 * 4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr (at) gmail.com> 5 * Copyright (c) 2016-2017 The strace developers. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "tests.h" 32 33 #include <asm/unistd.h> 34 35 #ifdef __NR_getcpu 36 37 # include <stdio.h> 38 # include <unistd.h> 39 40 int 41 main(void) 42 { 43 unsigned *bogus_cpu = 44 (unsigned *) tail_alloc(sizeof(*bogus_cpu)) + 1; 45 unsigned *bogus_node = 46 (unsigned *) tail_alloc(sizeof(*bogus_node)) + 1; 47 unsigned *bogus_tcache = 48 (unsigned *) tail_alloc(sizeof(*bogus_tcache)) + 1; 49 50 long res; 51 TAIL_ALLOC_OBJECT_CONST_PTR(unsigned, cpu); 52 TAIL_ALLOC_OBJECT_CONST_PTR(unsigned, node); 53 long *tcache = tail_alloc(128); 54 55 res = syscall(__NR_getcpu, NULL, NULL, NULL); 56 printf("getcpu(NULL, NULL, NULL) = %s\n", sprintrc(res)); 57 58 res = syscall(__NR_getcpu, bogus_cpu, bogus_node, bogus_tcache); 59 printf("getcpu(%p, %p, %p) = %s\n", 60 bogus_cpu, bogus_node, bogus_tcache, sprintrc(res)); 61 62 res = syscall(__NR_getcpu, cpu, node, tcache); 63 if (res != 0) 64 perror_msg_and_skip("getcpu"); 65 66 printf("getcpu([%u], [%u], %p) = 0\n", *cpu, *node, tcache); 67 68 puts("+++ exited with 0 +++"); 69 70 return 0; 71 } 72 73 #else 74 75 SKIP_MAIN_UNDEFINED("__NR_getcpu"); 76 77 #endif 78
